Умышленное обращение заставляет приложение сбой

Question

Я использовал Android-сервис, и я знаю, как он работает, но я не знаю разницы между ним и IntentService. Поэтому я создал класс MyIntentService, как показано ниже, но при запуске время, когда приложение выходит из строя и генерирует приведенные ниже ошибки logCat.

пожалуйста, скажите мне, почему я получаю эти ошибки и как ее решить

MainActivity

public class MainActivity extends AppCompatActivity { 

    private final String TAG = this.getClass().getSimpleName(); 

    private Button mbtnSend = null; 
    private int i = 0; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     this.mbtnSend = (Button) findViewById(R.id.btn_send); 

     this.mbtnSend.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       Intent intent = new Intent(getApplicationContext(), MyIntentService.class); 
       intent.putExtra("intent_key", ++i); 
       startService(intent); 
      } 
     }); 

    } 
} 

MyIntentService:

public class MyIntentService extends IntentService { 

    private final String TAG = this.getClass().getSimpleName(); 

    /** 
    * Creates an IntentService. Invoked by your subclass's constructor. 
    * 
    * @param name Used to name the worker thread, important only for debugging. 
    */ 
    public MyIntentService(String name) { 
     super(name); 
     setIntentRedelivery(true); 
    } 

    @Override 
    public void onCreate() { 
     super.onCreate(); 
     Log.w(TAG, SubTag.msg("onCreate")); 
    } 

    @Override 
    protected void onHandleIntent(Intent intent) { 
     Log.w(TAG, SubTag.msg("onHandleIntent")); 

     int intent_value = intent.getIntExtra("intent_key", -1); 
     Log.i(TAG, SubTag.bullet("", "intent_value: " + intent_value)); 

     SystemClock.sleep(3000); 
    } 

    @Override 
    public int onStartCommand(Intent intent, int flags, int startId) { 
     Log.w(TAG, SubTag.msg("onStartCommand")); 

     return super.onStartCommand(intent, flags, startId); 
    } 

    @Override 
    public void onDestroy() { 
     super.onDestroy(); 
     Log.w(TAG, SubTag.msg("onDestroy")); 
    } 
} 

LogCat:

07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime: FATAL EXCEPTION: main 
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime: Process: com.example.com.intentservice_00, PID: 18094 
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime: java.lang.RuntimeException: Unable to instantiate service com.example.com.intentservice_00.MyIntentService: java.lang.InstantiationException: java.lang.Class<com.example.com.intentservice_00.MyIntentService> has no zero argument constructor 
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at android.app.ActivityThread.handleCreateService(ActivityThread.java:3778) 
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at android.app.ActivityThread.access$2100(ActivityThread.java:223) 
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1885) 
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at android.os.Handler.dispatchMessage(Handler.java:102) 
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at android.os.Looper.loop(Looper.java:158) 
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at android.app.ActivityThread.main(ActivityThread.java:7231) 
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at java.lang.reflect.Method.invoke(Native Method) 
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120) 
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime: Caused by: java.lang.InstantiationException: java.lang.Class<com.example.com.intentservice_00.MyIntentService> has no zero argument constructor 
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at java.lang.Class.newInstance(Native Method) 
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at android.app.ActivityThread.handleCreateService(ActivityThread.java:3775) 
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at android.app.ActivityThread.access$2100(ActivityThread.java:223)  
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1885)  
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at android.os.Handler.dispatchMessage(Handler.java:102)  
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at android.os.Looper.loop(Looper.java:158)  
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at android.app.ActivityThread.main(ActivityThread.java:7231)  
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at java.lang.reflect.Method.invoke(Native Method)  
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)  
07-18 11:39:04.081 18094-18094/com.example.com.intentservice_00 E/AndroidRuntime:  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)  

Answer 1

Попробуйте это .. Создать конструктор по умолчанию

public class MyIntentService extends IntentService{ 

    public MyIntentService(){ 
     super(null);// That was the lacking constructor 
    } 
    public MyIntentService(String name) { 
     super(name); 
    } 
//... 
} 

Надеется, что это помогает